import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Scanner;

/**
 * @author Jiange
 * @create 2021-08-15-19:21
 */
public class MyTest {
    public static void main(String[] args) {
        new MyTest().jian(new ArrayList<Integer>());
    }
    void jian(List<?> list){
    }
}

